@Quang_Vu_Blog  As per kafka-connect docs the default port "rest.port" is 8083  rest.port - the port the REST interface listens on for HTTP requests   So are you getting conflict on port 8003 (or there is a typo ? is it 8083)  Can you try changing the "rest.port" in your worker config to something else and then try again. Also please try to run the below commands before starting kafka-connect to verify if there is any port conflict? Or if there are any bind address issue   # netstat -tnlpa | grep 8083 # netstat -tnlpa | grep 8003   . ... View more